I'm not hiding anything, I'm choosing what to share; there's a difference.
as to your (somewhat naive) perspective, yeah, having your shit out in the open is a credible threat. the solution is have all your shit private by default and not shared with anyone. then, allow leaks on a case-by-case basis.
we're all done (or should be, at least) with the idea that there are laws and regulations shielding us from the now rampant abuse from various threat actors. instead of relying on the government or whoever to enact those regulations, I find it way better to not allow anyone to be in the position to compromise me.
this is a forever moving target and you're never going to achieve full security; to paraphrase cory doctorow, that's a full-time, unpaid job that you're doing in addition to your existing job. but I'm better off with more security and privacy than without, so I'm ok with the sacrifices I have to make.